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Biosynthesis Of Peptide Antibiotics
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Download or read book Lasso Peptides written by Yanyan Li and published by Springer. This book was released on 2014-10-21 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lasso peptides form a growing family of fascinating ribosomally-synthesized and post-translationally modified peptides produced by bacteria. They contain 15 to 24 residues and share a unique interlocked topology that involves an N-terminal 7 to 9-residue macrolactam ring where the C-terminal tail is threaded and irreversibly trapped. The ring results from the condensation of the N-terminal amino group with a side-chain carboxylate of a glutamate at position 8 or 9, or an aspartate at position 7, 8 or 9. The trapping of the tail involves bulky amino acids located in the tail below and above the ring and/or disulfide bridges connecting the ring and the tail. Lasso peptides are subdivided into three subtypes depending on the absence (class II) or presence of one (class III) or two (class I) disulfide bridges. The lasso topology results in highly compact structures that give to lasso peptides an extraordinary stability towards both protease degradation and denaturing conditions. Lasso peptides are generally receptor antagonists, enzyme inhibitors and/or antibacterial or antiviral (anti-HIV) agents. The lasso scaffold and the associated biological activities shown by lasso peptides on different key targets make them promising molecules with high therapeutic potential. Their application in drug design has been exemplified by the development of an integrin antagonist based on a lasso peptide scaffold. The biosynthesis machinery of lasso peptides is therefore of high biotechnological interest, especially since such highly compact and stable structures have to date revealed inaccessible by peptide synthesis. Lasso peptides are produced from a linear precursor LasA, which undergoes a maturation process involving several steps, in particular cleavage of the leader peptide and cyclization. The post-translational modifications are ensured by a dedicated enzymatic machinery, which is composed of an ATP-dependent cysteine protease (LasB) and a lactam synthetase (LasC) that form an enzymatic complex called lasso synthetase. Microcin J25, produced by Escherichia coli AY25, is the archetype of lasso peptides and the most extensively studied. To date only around forty lasso peptides have been isolated, but genome mining approaches have revealed that they are widely distributed among Proteobacteria and Actinobacteria, particularly in Streptomyces, making available a rich resource of novel lasso peptides and enzyme machineries towards lasso topologies.
Book Synopsis Prokaryotic Antimicrobial Peptides by : Djamel Drider
Download or read book Prokaryotic Antimicrobial Peptides written by Djamel Drider and published by Springer Science & Business Media. This book was released on 2011-03-08 with total page 451 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book will provide an overview of the advancement of fundamental knowledge and applications of antimicrobial peptides in biomedical, agricultural, veterinary, food, and cosmetic products. Antimicrobial peptides stand as potentially great alternatives to current antibiotics, and most research in this newly-created area has been published in journals and other periodicals. It is the editors’ opinion that it is timely to sum up the most important achievements in the field and provide the scientific community in a reference book. The goals of this project include illustrating the achievements made so far, debating the state of the art, and drawing new perspectives.
Book Synopsis Synthetic Aspects of Biologically Active Cyclic Peptides by : Nobuo Izumiya
Download or read book Synthetic Aspects of Biologically Active Cyclic Peptides written by Nobuo Izumiya and published by Halsted Press. This book was released on 1979 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Peptide Antibiotics by : Christopher Dutton
Download or read book Peptide Antibiotics written by Christopher Dutton and published by CRC Press. This book was released on 2001-12-04 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference summarizes the latest research on the structure, function, and design of synthetic and natural peptide antibiotics, describing practical applications of these compounds in food preservation and packaging, and in the prevention and treatment of infectious diseases by direct anti-bacterial action and as part of the adaptive immune resp
Book Synopsis Biotechnology of Antibiotics, Second Edition, by : William Strohl
Download or read book Biotechnology of Antibiotics, Second Edition, written by William Strohl and published by CRC Press. This book was released on 1997-07-03 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: This incomparable Second Edition of a highly regarded reference has been entirely rewritten and enlarged to reflect the explosion of information and technologies that have emerged since the publication of the previous edition. Strikes the perfect balance between proven traditional approaches and modern methods that promise to yield new products and processes! Specifically addressing microbially derived commercially important bioactive products that are currently or soon-to-be available, Biotechnology of Antibiotics, Second Edition analyzes the use of recombinant enzymes to produce biologically active molecules, including a cholesterol-lowering agent, an anti-HIV drug for the treatment of AIDS, and b-lactam antibiotics gives insight into the biochemistry, molecular biology, and production of antibiotics used as therapeutic agents focuses on state-of-the-art techniques for the development of new antibiotics using novel approaches and strategies highlights recent advances in the genetic manipulation of antibiotic biosynthesis genes to create structures from gene combinations for new biological activities describes in detail the development and current status of newly created antibiotics and pharmacologically active natural products and much more! Written by authorities from both industry and academia and containing nearly 4000 bibliographic citations, Biotechnology of Antibiotics, Second Edition is an outstanding resource for pharmaceutical scientists, medicinal chemists and biochemists, molecular biologists and industrial microbiologists, chemical engineers, fermentation bioengineers, bioprocess technologists, and upper-level undergraduate and graduate students in these disciplines.
Book Synopsis Antimicrobial Chemotherapy by : Roger Finch
Download or read book Antimicrobial Chemotherapy written by Roger Finch and published by Oxford University Press, USA. This book was released on 2012-01-05 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sixth edition of this successful book encourages good prescribing habits in doctors throughout the world, by describing the basic properties of antibiotics and other antimicrobial agents, and discussing the principles underlying the rational use of antimicrobial agents in the management of infection.
Book Synopsis Prokaryotic Metabolism and Physiology by : Byung Hong Kim
Download or read book Prokaryotic Metabolism and Physiology written by Byung Hong Kim and published by Cambridge University Press. This book was released on 2019-05-16 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive and up-to-date review of key metabolic processes in bacteria and archaea and how metabolism is regulated under various conditions.
Book Synopsis Comprehensive Natural Products Chemistry by : Derek Barton
Download or read book Comprehensive Natural Products Chemistry written by Derek Barton and published by Newnes. This book was released on 1999-02-18 with total page 8492 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Natural Products Chemistry
Book Synopsis Advances in BioChirality by : C. Zucchi
Download or read book Advances in BioChirality written by C. Zucchi and published by Elsevier. This book was released on 1999-09-08 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chirality is a fundamental, persistent, but often overlooked feature of all living organisms on the molecular level as well as on the macroscopic scale. The high degree of preference for only one of two possible mirror image forms in Nature, often called biological homochirality is a puzzling, and not yet fully understood, phenomenon. This book covers biological homochirality from an interdisciplinary approach - contributions range from synthetic chemists, theoretical topologists and physicists, from palaeontologists and biologists to space scientists and representatives of the pharmaceutical and materials industries. Topics covered include - theory of biochirality, origins of biochirality, autocatalysis with amplification of chirality, macroscopic (present) biochirality, fossil records of chiral organisms - paleochirality, extraterrestrial origin of chirality, exceptions to the rule of biological homochirality, D-amino acids, chemical transfer of chirality, PV effects, and polarised radiation chemistry.
Book Synopsis Bacterial Cell Wall by : J.-M. Ghuysen
Download or read book Bacterial Cell Wall written by J.-M. Ghuysen and published by Elsevier. This book was released on 1994-02-09 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of the bacterial cell wall emerged as a new field of research in the early 1950s, and has flourished in a multitude of directions. This excellent book provides an integrated collection of contributions forming a fundamental reference for researchers and of general use to teachers, advanced students in the life sciences, and all scientists in bacterial cell wall research. Chapters include topics such as: Peptidoglycan, an essential constituent of bacterial endospores; Teichoic and teichuronic acids, lipoteichoic acids, lipoglycans, neural complex polysaccharides and several specialized proteins are frequently unique wall-associated components of Gram-positive bacteria; Bacterial cells evolving signal transduction pathways; Underlying mechanisms of bacterial resistance to antibiotics.
Download or read book Biosurfactants written by Ramkrishna Sen and published by Springer Science & Business Media. This book was released on 2010-12-31 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microbial world has given us many surprises including microbes that grow under extremely harsh conditions (122C at 40 MPa), novel metabolisms such as the uranium and perchlorate reduction, and novel chemicals that can be used to control diseases. We continually face new and difficult problems such as the need to transition to more carbon-neutral energy sources and to find eco-friendly chemicals and to find new drugs to treat disease. Will it be possible to tap into the seemingly limitless potential of microbial activity to solve our current and future problems?The answer to this question is probably yes. We are already looking to the microbial world to provide new energy sources, green chemicals to replace those made from petroleum, and new drugs to fight disease. To help us along these paths, we are deciphering how microorganisms interact with each other. We know that microbial populations interact and communicate with each other. The language that microbes use is chemical where small molecules are exchanged among different microbial cells. Sometimes, these chemicals suppress activities of competitors and could be used as antibiotics or may have other therapeutic uses. Other times, the chemicals stimulate complex responses in microbial populations such as fruiting body or biofilm formation. By understanding the conversation that microbes are having among themselves, e. g.
Book Synopsis Biochemistry of Peptide Antibiotics by : Horst Kleinkauf
Download or read book Biochemistry of Peptide Antibiotics written by Horst Kleinkauf and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-07-22 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: No detailed description available for "Biochemistry of Peptide Antibiotics".
Book Synopsis Nisin and Novel Lantibiotics by : G. Jung
Download or read book Nisin and Novel Lantibiotics written by G. Jung and published by Springer Science & Business Media. This book was released on 1991-12-31 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the First International Workshop on Lantibiotics, April 15-18, 1991, Physikzentrum Bad Honnef, F.R.G.
Book Synopsis Microbial Resources by : Ipek Kurtboke
Download or read book Microbial Resources written by Ipek Kurtboke and published by Academic Press. This book was released on 2017-03-31 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Resources: From Functional Existence in Nature to Applications provides an exciting interdisciplinary journey through the rapidly developing field of microbial resources, including relationships to aspects of microbiology. Covers the functional existence of microorganisms in nature, as well as the transfer of this knowledge for industrial and other applications. Examines the economic perspective of revealing the potential value of microbial material and figuring it into socio-economic value; legal perspectives; and how to organize a fair allotment of socio-economic benefits to all stakeholders who have effectively contributed to the preservation, study, and exploitation of microbiological material. - Covers aspects of foundational information related to microbiology, microbial ecology, and diversity, as well as new advances in microbial genomics - Provides information on the utilization of microbial resources in biotechnology - Covers legislative issues and related law in biodiscovery - Fills a need for a very broad audience and is a good resource for microbiologists seeking to know the extent of microbiology approaches, the policies associated with microbiology, and potential career paths for researchers - Has significant added value due to the inclusion of comprehensive coverage of the biology, ecology, biochemistry and international legislation surrounding these applications
Book Synopsis Bioactive Food Proteins and Peptides by : Navam S. Hettiarachchy
Download or read book Bioactive Food Proteins and Peptides written by Navam S. Hettiarachchy and published by CRC Press. This book was released on 2011-12-02 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many naturally occurring compounds from foods such as rice, vegetables, fruits, and animal products possess properties that help to slow disease progression, inhibit pathophysiological mechanisms, or suppress activities of pathogenic molecules. Proteins and peptides play significant roles in such activities and are gaining importance as nutraceuticals that benefit numerous aspects of health and nutrition. Bioactive Food Proteins and Peptides: Applications in Human Health provides a human health perspective on food-derived proteins and peptides. It describes the potential for large-scale production with advances in technology and proposes challenges and opportunities for the future of health, nutrition, medicine, and the biosciences. The book begins by addressing properties related to chemistry and bioactivity. It examines proteins and peptides as allergens, antihypertensive agents, antimicrobials, antioxidants, and anticancer agents. It also discusses findings on the bioavailability and toxicity of food-derived peptides and intestinal functions. Next, the contributors present information on therapeutic peptides. They discuss recent developments in proteomics, bioavailability, and opportunities for designing future peptide-based foods. Providing a comprehensive review of bioactive proteins and peptides obtained from food sources, the book brings together the most up-to-date and essential information from eminent researchers from all over the world. Academics, food scientists and technologists, nutritionists, biochemists, persons in industry, and government researchers and regulators will find this book to be an essential resource for new data and developments.
Book Synopsis Organic Chemistry of Enzyme-Catalyzed Reactions, Revised Edition by : Richard B. Silverman
Download or read book Organic Chemistry of Enzyme-Catalyzed Reactions, Revised Edition written by Richard B. Silverman and published by Elsevier. This book was released on 2002-03-07 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Organic Chemistry of Enzyme-Catalyzed Reactions is not a book on enzymes, but rather a book on the general mechanisms involved in chemical reactions involving enzymes. An enzyme is a protein molecule in a plant or animal that causes specific reactions without itself being permanently altered or destroyed. This is a revised edition of a very successful book, which appeals to both academic and industrial markets. - Illustrates the organic mechanism associated with each enzyme-catalyzed reaction - Makes the connection between organic reaction mechanisms and enzyme mechanisms - Compiles the latest information about molecular mechanisms of enzyme reactions - Accompanied by clearly drawn structures, schemes, and figures - Includes an extensive bibliography on enzyme mechanisms covering the last 30 years - Explains how enzymes can accelerate the rates of chemical reactions with high specificity - Provides approaches to the design of inhibitors of enzyme-catalyzed reactions - Categorizes the cofactors that are appropriate for catalyzing different classes of reactions - Shows how chemical enzyme models are used for mechanistic studies - Describes catalytic antibody design and mechanism - Includes problem sets and solutions for each chapter - Written in an informal and didactic style
Book Synopsis Biosynthesis of Tetrapyrroles by : P. M. Jordan
Download or read book Biosynthesis of Tetrapyrroles written by P. M. Jordan and published by . This book was released on 1991 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
